We highly recommend that you use the
HTC USB-C Digital to 3.5mm Audio Jack Adapter
. This adapter is available in-box for certain phone models or may be purchased separately on the HTC website.
Before you use the adapter, update the
HTC Audio Jack Adapter Toolkit on your phone to the latest version from
Google Play Store. After updating the toolkit, connect the adapter with your 3.5mm headset to your phone. The toolkit will check for the latest firmware update for the adapter and will show you instructions on how to update it, if needed.